Added READMes to examples

Author: owais

examples/README

@@ -0,0 +1,23 @@
+## Usage
+
+Setup virtualenv (optional)
+```bash
+virtualenv ve
+. ve/bin/activate
+```
+
+Install dependencies
+```bash
+pip install -r requirements.txt
+npm install
+```
+
+Run django server
+```bash
+./manage.py runserver
+```
+
+Run webpack compiler
+```bash
+./node_modules/.bin/webpack --config assets/webpack.config.js --watch
+```

examples/code-splitting/README

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+../README

examples/hot-reload/README

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+## Usage
+
+Setup virtualenv (optional)
+```bash
+virtualenv ve
+. ve/bin/activate
+```
+
+Install dependencies
+```bash
+pip install -r requirements.txt
+npm install
+```
+
+Run django server
+```bash
+./manage.py runserver
+```
+
+Run webpack dev server
+```bash
+node server.js
+```
+
+Now you can make changes to `assets/js/app.jsx` and the changes will show up in the browser automagically.

examples/simple/README

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+../README